Yeah.  don't do this here, but I'm increasingly thinking we need

```
TestUtils.fileFromResource(Class<?> loadingClass, String resourceName);
```

So this could read 

```
    compilationHelper.assertCompileFailsWithMessages(
        fileFromResources(getClass(), "ResourceName.java"));
```

Just way less cruft. 

Or just bake that into an override of assertcompileFailsWithMessages, but that probably is too magical.

Anyway - don't do this here.  Just musing out loud.